Charging Buzz

[ZoNiE]

So I noticed that on 120V the car goes buzz-buzz-buzz... when charging. On 240V it is totally silent. I'm thinking perhaps it charges some caps and then discharges into the battery on 120V?

Any ideas?

 

[jimbo69ny]

So I noticed that on 120V the car goes buzz-buzz-buzz... when charging. On 240V it is totally silent. I'm thinking perhaps it charges some caps and then discharges into the battery on 120V?

Any ideas?

That is totally normal.